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The Bell System Technical Journal (1922-1983)

The scientific discoveries and technological innovations produced by Bell System research and engineering were critical not only to the evolution of global telecommunications but, more widely, they had a considerable impact on the technological base of the global economy and, indeed, on our daily lives.



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Bell System Technical Journal, 10: 1. January 1931 pp 20-32. A Magnetic Curve Tracer. (Haworth, F.E.)
Topics: magnetic, fluxmeter, deflection, curve, current, loop, coil, hysteresis, specimen, cell, hysteresis...
Bell System Technical Journal, 10: 1. January 1931 pp 33-45. A Multi-Channel Television Apparatus. (Ives, Herbert E.)
Topics: image, frequency, scanning, disc, elements, photoelectric, apparatus, television, image elements,...
Bell System Technical Journal, 10: 1. January 1931 pp 96-115. Absolute Calibration of Condenser Transmitters. (Sivian, L.J.)
Topics: transmitter, calibration, diaphragm, acoustic, electrode, field, condenser, pressure, sound,...
Bell System Technical Journal, 10: 1. January 1931 pp 149-152. Abstracts of Technical Articles from Bell System Sources .
Topics: noise, molded, contact, inductance, contacts, resistance, spheres, flux, microscopic, loud, loud...
Bell System Technical Journal, 10: 1. January 1931 pp 63-95. Certain Factors Affecting the Gain of Directive Antennas. (Southworth, G. C.)
Topics: sin, array, antenna, antennas, couplets, equation, arrays, diagrams, linear, calculated, english...
Bell System Technical Journal, 10: 1. January 1931 pp 46-62. Condenser and Carbon Microphones - Their Construction and Use. (Jones, W.C.)
Topics: diaphragm, condenser, microphone, sound, damping, frequency, calibration, carbon, pressure,...
Bell System Technical Journal, 10: 1. January 1931 pp 153-154. Contributors to this Issue.
Topics: bell, telephone, transmission, western, engaged, chiefly, assistant, development, johns,...
Bell System Technical Journal, 10: 1. January 1931 pp 132-148. Paragutta, A New Insulating Material for Submarine Cables. (Kemp, A.R.)
Topics: gutta, percha, rubber, electrical, water, submarine, balata, paragutta, insulating, insulation,...
Bell System Technical Journal, 10: 1. January 1931 pp 116-131. Rating the Transmission Performance of Telephone Circuits. (Martin, W.H.)
Topics: transmission, circuit, telephone, rating, characteristics, ratings, circuits, performance,...
Bell System Technical Journal, 10: 1. January 1931 pp 1-19. The Detection of Two Modulated Waves Which Differ Slightly in Carrier Frequency. (Aiken, Charles B.)
Topics: frequency, frequencies, desired, carrier, undesired, interfering, modulation, amplitude,...
Bell System Technical Journal, 10: 2. April 1931 pp 342-345. Abstracts of Technical Articles From Bell System Sources.
Topics: fatigue, transmission, sheath, apparatus, cadmium, color, coatings, electrolysis, abstracts, alloy,...
Bell System Technical Journal, 10: 2. April 1931 pp 273-283. Bayes' Theorium - An Expository Presentation. (Molina, Edward C.)
Topics: probability, priori, posteriori, unknown, probabilities, existence, observed, theorem, balls,...
Bell System Technical Journal, 10: 2. April 1931 pp 346-348. Contributors to this Issue.
Topics: telephone, american, telegraph, electric, engineering, cornell, department, bell, transmission,...
Bell System Technical Journal, 10: 2. April 1931 pp 284-341. Extentions to the Theory and Design of Electric Wave-Filters. (Zobel, Otto J.)
Topics: impedance, impedances, image, transmitting, frequency, networks, shunt, terminal, frequencies,...
Bell System Technical Journal, 10: 2. April 1931 pp 243-264. Overseas Radio Extentions to Wire Telephone Networks. (Espenschied, Lloyd; Wilson, William)
Topics: transmission, radio, telephone, circuits, circuit, wire, atlantic, transmitting, transatlantic,...
Bell System Technical Journal, 10: 2. April 1931 pp 265-272. Some Optical Features in Two-Way Television. (Ives, Herbert E.)
Topics: scanning, caesium, optical, disc, lamp, potassium, cells, beam, apparatus, image, caesium cells,...
Bell System Technical Journal, 10: 2. April 1931 pp 231-240. Status of Cooperative Work on Joint Use of Poles. (Martin, J.C.; Huber, H.L.)
Topics: joint, telephone, circuits, poles, protective, voltages, inductive, power, clearances,...
Bell System Technical Journal, 10: 2. April 1931 pp 206-230. Status of Joint Development and Research on Low-Frequency Induction. (Conwell, R.N.; Warren, H.S.)
Topics: voltages, power, induced, telephone, ground, circuits, residual, induction, circuit, impedance,...
Bell System Technical Journal, 10: 2. April 1931 pp 184-205. Status of Joint Development and Research on Noise Frequency Induction. (Wills, H.L.; Blackwell, O.B.)
Topics: telephone, circuits, power, currents, frequency, subcommittee, circuit, voltages, induction,...
Bell System Technical Journal, 10: 2. April 1931 pp 241-242. Symposium on Coordination of Power and Telephone Plant, Closing Remarks. (Gherardi, B.)
Topics: power, symposium, technical, cooperative, companies, satisfactory, telephone, coordination,...
Bell System Technical Journal, 10: 2. April 1931 pp 155-158. Symposium on Coordination of Power and Telephone Plant. (Pack, R.F. 241-242)
Topics: bell, companies, inductive, power, general, cooperative, gherardi, telephone, subcommittee, joint,...
Bell System Technical Journal, 10: 2. April 1931 pp 159-183. Trends in Telephone and Power Practise as Affecting Coordination. (Harrison, W.H.; Silver, A.E.)
Topics: coordination, circuits, telephone, power, voltages, practise, trends, transmission, currents,...
Bell System Technical Journal, 10: 3. July 1931 pp 525-528. Abstracts of Technical Articles from Bell System Sources.
Topics: railroad, bell, telephone, microscope, images, meter, photoelectric, sound, instrumentalities,...
Bell System Technical Journal, 10: 3. July 1931 pp 382-407. Bridge Methods for Locating Resistance Faults on Cable Wires. (Henneberger, T.C.; Edwards, P.G.)
Topics: resistance, wires, cable, resistances, faults, bridge, insulation, varley, conductor, locating,...
Bell System Technical Journal, 10: 3. July 1931 pp 529-530. Contributors to this Issue.
Topics: telegraph, development, telephone, american, brigham, manufacturing, transmission, electric, plant,...
Bell System Technical Journal, 10: 3. July 1931 pp 432-471. Developments in the Manufacture of Lead-Covered Paper-Insulated Telephone Cable. (Shea, John R.)
Topics: cable, lead, telephone, vacuum, storage, bell, capacitance, wire, journal, insulation, die block,...
Bell System Technical Journal, 10: 3. July 1931 pp 472-484. Effect of Ground Permeability on Ground Return Circuits. (Wise, W. Howard)
Topics: permeability, ground, cos, equations, journal, impedance, log, series, computation, formulas,...
Bell System Technical Journal, 10: 3. July 1931 pp 408-419. Mutual Impedance of Grounded Wires Lying on the Surface of the Earth. (Foster, Ronald M.)
Topics: impedance, mutual, sin, formula, integral, electric, earth, grounded, force, wires, propagation...
Bell System Technical Journal, 10: 3. July 1931 pp 485-513. Negative Impedances and the Twin 21-Type Repeater. (Crisson, George)
Topics: circuit, impedance, negative, resistance, impedances, terminals, amplifier, series, repeater,...
Bell System Technical Journal, 10: 3. July 1931 pp 514-524. New Standard Specifications for Wood Poles. (Jones, R.L.)
Topics: poles, specifications, butt, fiber, standard, pole, pine, knots, requirement, class, single knots,...
Bell System Technical Journal, 10: 3. July 1931 pp 349-373. Some Physical Characteristics of Speech and Music. (Fletcher, Harvey)
Topics: speech, pitch, average, melodic, intensity, octaves, cycles, peak, octave, power, peak power, pitch...
Bell System Technical Journal, 10: 3. July 1931 pp 374-381. The Statistical Energy-Frequency Spectrum of Random Disturbances. (Carson, John R.)
Topics: statistical, disturbances, spectrum, probability, static, preceding, amplitudes, elementary,...
Bell System Technical Journal, 10: 3. July 1931 pp 420-431. Transients in Grounded Wires on the Earth's Surface. (Riordan, John)
Topics: exp, grounded, erf, integration, voltage, equation, erfc, wires, function, integral, exp iut, error...
Bell System Technical Journal, 10: 4. October 1931 pp 684-690. Abstracts of Technical Articles From Bell System Sources.
Topics: frequency, basilar, transmission, frequencies, vibrates, transmitting, abstracts, radio, bell,...
Bell System Technical Journal, 10: 4. October 1931 pp 601-615. Application of Printing Telegraph to Long-Wave Radio Circuits. (Bailey, Austin; McCann, T.A.)
Topics: noise, telegraph, radio, cent, errors, rochester, transmission, printing, receiving, printer,...
Bell System Technical Journal, 10: 4. October 1931 pp 616-627. Audible Frequency Ranges of Music, Speech and Noise. (Snow, W.B.)
Topics: frequency, audible, frequencies, cycles, observers, bass, range, ranges, tests, noises, audible...
Bell System Technical Journal, 10: 4. October 1931 pp 628-655. Contemporary Advances in Physics, XXII - Transmutation. (Darrow, Karl K.)
Topics: protons, corpuscles, nuclei, curve, particles, atoms, range, curves, ranges, transmutation, ranges...
Bell System Technical Journal, 10: 4. October 1931 pp 691-692. Contributors to this Issue.
Topics: telephone, bell, telegraph, university, western, electric, radio, development, american, engaged,...
Bell System Technical Journal, 10: 4. October 1931 pp 656-683. Developments in Short-Wave Directive Antennas. (Bruce, E.)
Topics: antenna, antennas, directive, horizontal, wire, vertical, tilt, signal, directivity, wave, vertical...
Bell System Technical Journal, 10: 4. October 1931 pp 565-576. Moving-Coil Telephone Receivers and Microphones. (Wente, E.C.; Thuras, A.L.)
Topics: diaphragm, microphone, frequency, receiver, acoustic, mechanical, impedance, coil, frequencies,...
Bell System Technical Journal, 10: 4. October 1931 pp 577-600. Some Developments in Common Frequency Broadcasting. (Gillett, G.D.)
Topics: frequency, stations, broadcasting, simultaneous, carrier, strength, distortion, phase, isochronism,...
Bell System Technical Journal, 10: 4. October 1931 pp 531-564. The Interconnection of Telephone Systems - Graded Multiples. (Wilkinson, R.I.)
Topics: trunks, graded, subgroup, multiple, calls, theoretical, trunk, load, interconnection, subgroups,...
Bell System Technical Journal, 11: 1. January 1932 pp 185-194. Abstracts of Technical Articles from Bell System Sources.
Topics: photoelectric, intensity, transmission, decay, reverberation, methods, currents, sound,...
Bell System Technical Journal, 11: 1. January 1932 pp 67-100. Constant Frequency Oscillators. (Llewellyn, F.B.)
Topics: frequency, circuit, oscillator, stabilizing, impedance, plate, tube, grid, stabilization, vacuum,...
Bell System Technical Journal, 11: 1. January 1932 pp 148-184. Contemporary Advances in Physics, XXIII - Data and Nature of Cosmic Rays. (Darrow, Karl K.)
Topics: rays, cosmic, ionization, electrons, ionizing, particles, curve, millikan, air, radioactive,...
Bell System Technical Journal, 11: 1. January 1932 pp 195-196. Contributors to this Issue.
Topics: bell, telephone, university, western, transmission, engineering, electric, engaged, electrical,...
Bell System Technical Journal, 11: 1. January 1932 pp 126-147. Regeneration Theory. (Nyquist, H.)
Topics: integral, amplifier, values, expression, lim, curve, network, integration, regeneration, integrand,...
Bell System Technical Journal, 11: 1. January 1932 pp 101-125. Some Physical Properties of Wiping Solders. (McLean, D.A.; Peek, R.L., Jr.; Schumacher, E.E.)
Topics: solder, solders, log, plasticity, wiping, equation, sample, values, porosity, liquid, bell system,...
Bell System Technical Journal, 11: 1. January 1932 pp 1-27. The Cathode Ray Oscillograph. (Johnson, J.B.)
Topics: cathode, tube, ray, oscillograph, plates, deflector, voltage, electrons, tubes, journal, deflector...
Bell System Technical Journal, 11: 1. January 1932 pp 28-52. The Operation of Vacuum Tubes as Class B and Class C Amplifiers. (Fay, C.E.)
Topics: grid, plate, output, current, dynamic, screen, tube, voltage, bias, curves, technical journal,...
Bell System Technical Journal, 11: 1. January 1932 pp 53-66. The Time Factor in Telephone Transmission. (Blackwell, O.B.)
Topics: transmission, circuits, circuit, telephone, bell, technical, delay, echo, waves, transmitted,...
Bell System Technical Journal, 11: 2. April 1932 pp 197-212. A New Key West-Havana Carrier Telephone Cable. (Affel, H.A.; Gorton, W.S.; Chesnut, R.W.)
Topics: cable, telephone, carrier, submarine, key, cables, havana, frequency, telegraph, apparatus,...
Bell System Technical Journal, 11: 2. April 1932 pp 293-317. A Voice and Ear for Telephone Measurements. (Inglis, A.H.; Gray, C.H.G.; Jenkins, R.T.)
Topics: artificial, ear, receiver, voice, frequency, impedance, transmitter, human, acoustic, measurements,...
Bell System Technical Journal, 11: 2. April 1932 pp 318-323. Abstracts of Technical Articles from Bell System Sources.
Topics: oxide, barium, oxidation, magnetization, thermionic, noise, clocks, loomis, oxygen, abstracts, bell...
Bell System Technical Journal, 11: 2. April 1932 pp 283-292. Cathode Sputtering - A Commercial Application. (Fruth, Hal F.)
Topics: sputtering, cathode, diaphragm, diaphragms, gold, bleeder, bell, und, electrolytic, metal, cathode...
Bell System Technical Journal, 11: 2. April 1932 pp 231-244. Cellulose Acetate Treatment for Textile Insulation - Development of the Manufacturing Process. (Avery, C.R.; Kress, H.)
Topics: acetone, cellulose, wire, coating, fibers, drying, textile, acetate, solution, insulation,...
Bell System Technical Journal, 11: 2. April 1932 pp 213-230. Cellulose Acetate Treatment for Textile Insulation - Engineering Development. (Wood, E.B.; Brobst, D.R.)
Topics: acetate, cellulose, insulation, textile, treatment, electrical, insulated, wire, characteristics,...
Bell System Technical Journal, 11: 2. April 1932 pp 324-325. Contributors to this Issue.
Topics: telephone, western, development, bell, massachusetts, telegraph, engaged, electric, ment,...
Bell System Technical Journal, 11: 2. April 1932 pp 264-282. Precision Methods Used in Constructing Electric Wave Filters for Carrier Systems. (Harris, G.R.)
Topics: coil, filter, filters, coils, resonant, inductance, shield, frequency, attenuation, frequencies,...
Bell System Technical Journal, 11: 2. April 1932 pp 245-263. The Development of a Handset for Telephone Stations. (Jones, W.C.; Inglis, A.H.)
Topics: transmitter, handset, carbon, diaphragm, resistance, granular, receiver, deskstand, telephone,...
Bell System Technical Journal, 11: 3. July 1932 pp 402-410. A Method of Measuring Acoustic Impedance. (Flanders, P.B.)
Topics: impedance, acoustic, tube, electrical, measuring, infinite, frequency, reactance, inch, pressure,...
Bell System Technical Journal, 11: 3. July 1932 pp 477-481. Abstracts of Technical Articles from Bell System Sources.
Topics: surface, bell, telephone, ions, adions, reverberation, carrier, frequency, abstracts, phenomena,...
Bell System Technical Journal, 11: 3. July 1932 pp 451-461. An Efficient Miniature Condenser Microphone System. (Harrison, H.C.; Flanders, P.B.)
Topics: microphone, condenser, miniature, pressure, sound, diaphragm, diffraction, cavity, resonance,...
Bell System Technical Journal, 11: 3. July 1932 pp 482-483. Contributors to this Issue.
Topics: telephone, transmission, university, engaged, bell, electric, electrical, development, institute,...
Bell System Technical Journal, 11: 3. July 1932 pp 327-333. Henry as an Electrical Pioneer. (Gherardi, Bancroft)
Topics: henry, electrical, telegraph, joseph, pioneer, magnet, electric, telephone, motor, contributions,...
Bell System Technical Journal, 11: 3. July 1932 pp 383-401. Magnet Steels and Permanent Magnets - Relationships Among Their Magnetic Properties. (Scott, K.L.)
Topics: magnet, curves, magnetic, magnets, steel, values, demagnetization, curve, magnet steels, bars, bell...
Bell System Technical Journal, 11: 3. July 1932 pp 334-367. The Caesium-Oxygen-Silver Photoelectric Cell. (Prescott, C.J., Jr.; Kelly, M.J.)
Topics: caesium, cathode, surface, photoelectric, spectral, cells, response, cell, deposition, oxygen,...
Bell System Technical Journal, 11: 3. July 1932 pp 411-450. Transmission Lines for Short-Wave Radio Systems. (Sterba, E.J.; Feldman, C.B.)
Topics: lines, impedance, transmission, conductor, radio, attenuation, radiated, concentric,...
Bell System Technical Journal, 11: 3. July 1932 pp 368-382. Two-Way Radio Telephone Circuits. (Wright, S.B.; Mitchell, D.)
Topics: radio, transmitting, relay, circuit, vodas, waves, receiving, transmission, privacy, circuits,...
Bell System Technical Journal, 11: 3. July 1932 pp 462-476. Wire Communication Aids to Air Transportation. (Nance, H.H.)
Topics: teletypewriter, weather, circuits, stations, tape, communication, air, circuit, commerce, radio,...
Bell System Technical Journal, 11: 4. October 1932 pp 622-628. Abstracts of Technical Articles from Bell System Sources.
Topics: heater, cathode, fourier, wires, disturbance, circuit, conduit, mortar, tube, frequencies, vacuum...
Bell System Technical Journal, 11: 4. October 1932 pp 563-575. An Expansion for Laplacian Integrals in Terms of Incomplete Gamma Functions, and Some Applications. (Molina, Edward C.)
Topics: expansion, laplacian, bessel, function, log, journal, incomplete, integrals, integral, theorie,...
Bell System Technical Journal, 11: 4. October 1932 pp 576-607. Contemporary Advances in Physics, XXIV - High-Frequency Phenomena in Gases, First Part. (Darrow, Karl K.)
Topics: electrons, gas, ionized, frequency, values, constant, equation, ions, conductivity, dielectric,...
Bell System Technical Journal, 11: 4. October 1932 pp 629-630. Contributors to this Issue.
Topics: telephone, american, chief, institute, engineering, transmission, bell, telegraph, western...
Bell System Technical Journal, 11: 4. October 1932 pp 520-545. Long Distance Telephone Circuits in Cable. (Clark, A.B.; Osborne, H.S.)
Topics: circuits, cable, circuit, loading, crosstalk, cables, toll, transmission, echo, telephone, cable...